CN102922354A - Friction wheel traction transmission cycloidal processing device - Google Patents
Friction wheel traction transmission cycloidal processing device Download PDFInfo
- Publication number
- CN102922354A CN102922354A CN2012104189668A CN201210418966A CN102922354A CN 102922354 A CN102922354 A CN 102922354A CN 2012104189668 A CN2012104189668 A CN 2012104189668A CN 201210418966 A CN201210418966 A CN 201210418966A CN 102922354 A CN102922354 A CN 102922354A
- Authority
- CN
- China
- Prior art keywords
- stage
- wheel
- planetary
- input shaft
- friction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Friction Gearing (AREA)
Abstract
本发明公开了一种摩擦轮牵引传动摆线加工装置,由一级太阳轮、输入轴、一级行星轮、一级行星轮支架、一级摩擦圈和外壳组成第一级行星减速机构;由二级太阳轮、二级行星轮、二级行星轮支架、二级摩擦圈和外壳组成第二级行星减速机构;由主动轮、传动轮A、传动轮B、从动轮和中间轴组成二级摩擦轮牵引传动机构;第二级行星轮支架上安装输出轴;输出轴与输入轴之间存在偏心距。本发明工作时,二级摩擦轮牵引传动行星减速机构,将输入轴旋转运动转换为输出轴绕输入轴的回转运动;二级摩擦轮牵引传动机构,按近似1:1的传动比将输入轴旋转运动传递给输出轴;刀具通过刀具夹持装置安装在输出轴上,从而实现刀具的摆线加工运动。
The invention discloses a friction wheel traction transmission cycloid processing device, which is composed of a first-stage sun gear, an input shaft, a first-stage planetary wheel, a first-stage planetary wheel bracket, a first-stage friction ring and a casing to form a first-stage planetary reduction mechanism; The secondary sun gear, secondary planetary gear, secondary planetary gear bracket, secondary friction ring and casing form the secondary planetary reduction mechanism; the secondary gear consists of driving wheel, drive wheel A, drive wheel B, driven wheel and intermediate shaft The friction wheel traction transmission mechanism; the output shaft is installed on the second-stage planetary wheel support; there is an eccentricity between the output shaft and the input shaft. When the present invention works, the two-stage friction wheel traction transmission planetary reduction mechanism converts the rotary motion of the input shaft into the rotary motion of the output shaft around the input shaft; the two-stage friction wheel traction transmission mechanism converts the input shaft The rotary motion is transmitted to the output shaft; the tool is mounted on the output shaft through the tool clamping device, thereby realizing the trochoidal machining movement of the tool.
Description
技术领域 technical field
本发明涉及一种摩擦牵引传动技术,特别是一种摩擦轮牵引传动摆线加工装置。The invention relates to a friction traction transmission technology, in particular to a friction wheel traction transmission cycloid processing device.
背景技术 Background technique
传统铣削加工中的开槽加工,一般在铣床上采用铣刀进行全刀宽加工。在切削过程中,全刀宽加工对刀具存在诸多的不利因素,如切削热和切屑的排放困难,刀具受到切削负荷大等。随着高速切削技术的快速发展,为了避免刀具的全刀宽加工,先进的数控系统采用摆线加工技术。摆线加工以圆形移动方式沿指定路径运动,逐渐切除毛坯中的材料,从而可避免刀具的全刀宽切削。摆线加工刀具轨迹是一条一阶导数光滑连续的曲线。摆线式高速加工过程中,刀具处于动态的全方位切削,刀体沿周边受力均匀,降低了刀具切削负荷,提高了载荷的稳定性。刀具向前切削材料也伴随着向后的空走刀,这样刀具有充分的时间冷却,同时,还能自动带走切屑,从而大大改善切削条件,提高刀具寿命。摆线加工对于高硬度材料窄槽和型腔的加工具有很大优势。但是采用摆线加工技术,要求数控机床坐标轴不断地往复运动,也就是机床处于震荡之中,不利于机床精度与寿命的保持,特别是对于大型龙门式数控铣床,坐标轴高速往复运动也难以实现。坐标磨床上进行内孔的高精度磨削加工时,一般使用行星电磨头。工件固定在工作台上,砂轮除作高速旋转外,还绕电磨头轴线作行星运动。但是行星电磨头由两套动力装置分别驱动砂轮高速旋转运动和砂轮的行星运动。For slotting in traditional milling, milling cutters are generally used on milling machines for full-width machining. In the cutting process, full tool width machining has many unfavorable factors for the tool, such as cutting heat and chip discharge difficulties, and the tool is subject to a large cutting load. With the rapid development of high-speed cutting technology, in order to avoid full-width machining of tools, advanced CNC systems adopt cycloidal machining technology. Trochoidal machining moves along a specified path in a circular motion, gradually removing material from the blank, thereby avoiding full-width cuts of the tool. The tool path of cycloid machining is a smooth and continuous curve with the first derivative. During the cycloidal high-speed machining process, the tool is in dynamic all-round cutting, and the tool body is evenly stressed along the periphery, which reduces the cutting load of the tool and improves the stability of the load. The forward cutting of the material by the tool is also accompanied by the backward idling, so that the tool has sufficient time to cool down, and at the same time, it can automatically take away the chips, thereby greatly improving the cutting conditions and increasing the tool life. Cycloidal processing has great advantages for the processing of narrow grooves and cavities in high-hardness materials. However, the use of cycloidal processing technology requires that the coordinate axis of the CNC machine tool is constantly reciprocating, that is, the machine tool is in vibration, which is not conducive to the maintenance of the accuracy and life of the machine tool. Especially for large-scale gantry-type CNC milling machines, it is difficult to accomplish. Planetary electric grinding heads are generally used for high-precision grinding of inner holes on coordinate grinding machines. The workpiece is fixed on the worktable, and the grinding wheel not only rotates at high speed, but also performs planetary motion around the axis of the electric grinding head. However, the planetary electric grinding head is driven by two sets of power devices to drive the high-speed rotation of the grinding wheel and the planetary motion of the grinding wheel.
发明内容 Contents of the invention
为解决现有技术存在的上述问题,本发明要设计一种既可以保持机床的精度与寿命、又可以不用两套动力装置的摩擦轮牵引传动摆线加工装置。In order to solve the above-mentioned problems in the prior art, the present invention will design a friction wheel traction drive cycloid processing device that can maintain the accuracy and life of the machine tool and can not use two sets of power devices.
为了实现上述目的,本发明的技术方案如下:一种摩擦轮牵引传动摆线加工装置,包括输入轴、一级太阳轮、一级行星轮、外壳、一级行星轮支架、二级行星轮、二级太阳轮、二级行星轮支架、主动轮、从动轮、一级摩擦圈、二级摩擦圈、传动轮A、中间轴、传动轮B和输出轴,所述的一级太阳轮安装于输入轴上,所述的一级行星轮与一级太阳轮接触并安装于一级行星轮支架上,所述的一级摩擦圈与一级行星轮接触并安装在外壳上,所述的一级太阳轮、输入轴、一级行星轮、一级行星轮支架、一级摩擦圈和外壳组成第一级行星减速机构;所述的二级太阳轮安装于第一级行星减速机构的一级行星轮支架上,所述的二级行星轮与二级太阳轮接触并安装于二级行星轮支架上,所述的二级摩擦圈与二级行星轮接触并安装在外壳上,所述的二级太阳轮、二级行星轮、二级行星轮支架、二级摩擦圈和外壳组成第二级行星减速机构;所述的主动轮安装于输入轴上的另一端,所述的传动轮A、传动轮B安装于固定在第二级行星减速机构的二级行星轮支架上的中间轴上,所述的从动轮安装于输出轴上,所述的主动轮、传动轮A、传动轮B、从动轮和中间轴组成二级摩擦轮牵引传动机构;所述的输出轴安装于第二级行星减速机构的二级行星轮支架上;所述的输出轴与输入轴之间存在偏心距。In order to achieve the above object, the technical solution of the present invention is as follows: a friction wheel traction drive cycloid processing device, comprising an input shaft, a primary sun gear, a primary planetary wheel, a casing, a primary planetary wheel bracket, a secondary planetary wheel, The secondary sun gear, the secondary planetary gear bracket, the driving wheel, the driven wheel, the primary friction ring, the secondary friction ring, the transmission wheel A, the intermediate shaft, the transmission wheel B and the output shaft, the primary sun gear is installed on On the input shaft, the first-stage planetary gear is in contact with the first-stage sun gear and installed on the first-stage planetary gear support, the first-stage friction ring is in contact with the first-stage planetary wheel and installed on the casing, and the first-stage The first-stage sun gear, the input shaft, the first-stage planetary gear, the first-stage planetary gear bracket, the first-stage friction ring and the housing form the first-stage planetary reduction mechanism; the second-stage sun gear is installed on the first-stage planetary reduction mechanism On the planetary gear bracket, the secondary planetary gear is in contact with the secondary sun gear and mounted on the secondary planetary gear bracket, the secondary friction ring is in contact with the secondary planetary gear and mounted on the housing, and the The secondary sun gear, the secondary planetary gear, the secondary planetary gear bracket, the secondary friction ring and the casing form the secondary planetary reduction mechanism; the driving wheel is installed on the other end of the input shaft, and the
本发明所述的第一级行星减速机构和第二级行星减速机构之间有一级或多级行星减速机构,以改变输出轴绕输入轴的回转速度。There is one or more stages of planetary reduction mechanisms between the first-stage planetary reduction mechanism and the second-stage planetary reduction mechanism in the present invention, so as to change the rotation speed of the output shaft around the input shaft.
本发明工作时,二级摩擦轮牵引传动行星减速机构,将输入轴旋转运动转换为输出轴绕输入轴的回转运动;同时,二级摩擦轮牵引传动机构,按近似1:1的传动比将输入轴旋转运动传递给输出轴;刀具通过刀具夹持装置安装在输出轴上,从而实现刀具的摆线加工运动。When the present invention works, the two-stage friction wheel traction transmission planetary reduction mechanism converts the rotary motion of the input shaft into the rotary motion of the output shaft around the input shaft; at the same time, the two-stage friction wheel traction transmission mechanism converts The rotary motion of the input shaft is transmitted to the output shaft; the tool is installed on the output shaft through the tool clamping device, so as to realize the cycloid machining movement of the tool.
与现有技术相比,本发明具有以下有益效果:Compared with the prior art, the present invention has the following beneficial effects:
1、由于本发明采用多级摩擦轮牵引传动行星减速机构,将输入轴旋转运动转换为输出轴绕输入轴的回转运动,避免了现有数控系统摆线加工技术对数控机床坐标轴不断地往复运动的要求,有利于机床精度与寿命的保持,同时解决了大型龙门式数控铣床无法进行摆线加工的问题。1. Since the present invention adopts a multi-stage friction wheel traction transmission planetary reduction mechanism, the rotary motion of the input shaft is converted into the rotary motion of the output shaft around the input shaft, which avoids the continuous reciprocation of the coordinate axis of the CNC machine tool by the cycloid processing technology of the existing CNC system The requirement of movement is conducive to the maintenance of the precision and life of the machine tool, and at the same time solves the problem that the large-scale gantry-type CNC milling machine cannot perform cycloidal processing.
2、本发明只要求一个动力输入源,避免了现有行星电磨头对两套动力装置的要求。2. The present invention only requires one power input source, which avoids the requirement of two sets of power devices for the existing planetary electric grinding head.
3、由于本发明所用的摩擦轮牵引传动是通过两光滑金属滚轮间的弹性流体润滑油膜(EHL)的剪切力来传递扭矩和功率。相比其它传动,如齿轮传动等,牵引传动具有机械效率高、传动平稳、噪声低、加工简单、制造成本低等优点。3. Because the friction wheel traction drive used in the present invention transmits torque and power by the shearing force of the elastic fluid lubricating oil film (EHL) between two smooth metal rollers. Compared with other transmissions, such as gear transmission, traction transmission has the advantages of high mechanical efficiency, stable transmission, low noise, simple processing, and low manufacturing cost.
4、本发明除具备上述优点外,还具有结构紧凑、体积小、重量轻、寿命长的优点,可应用于铣床或加工中心上铣削或磨削加工槽、内孔,特别是大型龙门铣床的开槽加工。4. In addition to the above advantages, the present invention also has the advantages of compact structure, small size, light weight and long life, and can be applied to milling or grinding grooves and inner holes on milling machines or machining centers, especially large-scale gantry milling machines. Grooving.
附图说明 Description of drawings
本发明仅有附图1张,其中:The present invention has only one accompanying drawing, wherein:
图1是具有两级行星减速机构的摩擦轮牵引传动摆线加工装置示意图。Fig. 1 is a schematic diagram of a friction wheel traction drive cycloid processing device with a two-stage planetary reduction mechanism.
图中:1、输入轴,2、一级太阳轮,3、一级行星轮,4、外壳,5、一级行星轮支架,6、二级行星轮,7、二级太阳轮,8、二级行星轮支架,9、主动轮,10、从动轮,11、一级摩擦圈,12、二级摩擦圈,13、传动轮A,14、中间轴,15、传动轮B,16、输出轴。In the figure: 1. Input shaft, 2. Primary sun gear, 3. Primary planetary gear, 4. Housing, 5. Primary planetary gear bracket, 6. Secondary planetary gear, 7. Secondary sun gear, 8. Secondary planetary wheel support, 9, driving wheel, 10, driven wheel, 11, primary friction ring, 12, secondary friction ring, 13, drive wheel A, 14, intermediate shaft, 15, drive wheel B, 16, output axis.
具体实施方式 Detailed ways
下面结合附图对本发明进行进一步地描述。具有两级行星减速机构的摩擦轮牵引传动摆线加工装置如图1所示,由输入轴1、输出轴16、一级太阳轮2、一级行星轮3、一级行星轮支架5、一级摩擦圈11、二级太阳轮7、二级行星轮6、二级行星轮支架8、二级摩擦圈12、主动轮9、传动轮A13、传动轮B15、从动轮10、中间轴14、外壳4等组成。由一级太阳轮2、一级行星轮3、一级行星轮支架5、一级摩擦圈11组成第一级摩擦轮牵引传动行星减速机构,由二级太阳轮7、二级行星轮6、二级行星轮支架8、二级摩擦圈12组成的二级摩擦轮牵引传动行星减速机构。输入轴1通过锥柄与机床主轴连接。转矩从输入轴1输入,通过第一、二级摩擦轮牵引传动行星减速机构,转换为输出轴16绕输入轴1的回转运动。为使本发明的整体尺寸不致过大,一级行星轮3与二级行星轮6、一级太阳轮2与二级太阳轮7、一级内摩擦圈11与二级内摩擦圈12的直径相差不大,第一级行星减速机构与第二级行星减速机构的传动比相接近。为实现刀具的摆线运动轨迹,输出轴16与输入轴1有一定距离的偏心。机床主轴通过锥柄连接传递给输入轴1的转矩,通过二级摩擦轮传动传递给输出轴16。主动轮9安装于输入轴1上,通过安装于中间轴14上的传动轮A13驱动中间轴14,再由安装于中间轴14上的传动轮B15,驱动安装于装置输出轴16上的从动轮10,最后将输入转矩传递给输出轴16。二级摩擦传动机构的传动比近似为1:1。所述的第一级行星减速机构和第二级行星减速机构之间有一级或多级行星减速机构,以改变输出轴16绕输入轴1的回转速度。The present invention will be further described below in conjunction with the accompanying drawings. The friction wheel traction transmission cycloid processing device with two-stage planetary reduction mechanism is shown in Fig. 1. It consists of
摩擦牵引传动机构要求相互接触的摩擦轮之间有足够的正压力,以形成高压牵引油膜,达到足够的牵引传动效率。以下两种方法可以在摩擦轮之间提供足够的正压力:(1)对称行星滚轮摩擦牵引传动装置普遍采用锥形滚道,通过调节面对面或背靠背配置的锥形滚道的轴向移动,来产生径向位移,从而提供牵引或摩擦传动所需要的正压力。行星滚轮牵引传动的压力自动加载机构采用滚珠V型槽或端面凸轮机构,它们的工作原理基本相同。本发明中,一级太阳轮2、二级太阳轮7、主动轮9、从动轮10分别是由上下两部分及中间垫圈组成的。上下两部分都带有一定的斜度,调节两部分之间的轴向位移可以控制一级太阳轮2与一级行星轮3、二级太阳轮7与二级行星轮6之间的径向位移,继而调节过盈量,从而为摩擦传动提供正压力。(2)各级摩擦轮采用胀紧套,通过调节胀紧套的胀紧螺钉控制摩擦轮轮廓的径向位移,达到提供正压力的效果。本发明装置中,一级太阳轮2、二级太阳轮7、主动轮9、从动轮10、传动轮A13、传动轮B15、一级行星轮3和二级行星轮6都可以在其外部安装胀紧套。The friction traction transmission mechanism requires sufficient positive pressure between the friction wheels in contact with each other to form a high-pressure traction oil film and achieve sufficient traction transmission efficiency. The following two methods can provide sufficient positive pressure between the friction wheels: (1) Symmetrical planetary roller friction traction drives generally use tapered raceways, by adjusting the axial movement of the tapered raceways arranged face-to-face or back-to-back, to Radial displacement is generated to provide the positive pressure required for traction or friction transmission. The pressure automatic loading mechanism of planetary roller traction transmission adopts ball V-shaped groove or end face cam mechanism, and their working principles are basically the same. Among the present invention, the primary sun gear 2, the secondary sun gear 7, the driving wheel 9, and the driven
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210418966.8A CN102922354B (en) | 2012-10-26 | 2012-10-26 | Friction wheel traction transmission cycloidal processing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210418966.8A CN102922354B (en) | 2012-10-26 | 2012-10-26 | Friction wheel traction transmission cycloidal processing device |
Publications (2)
Publication Number | Publication Date |
---|---|
CN102922354A true CN102922354A (en) | 2013-02-13 |
CN102922354B CN102922354B (en) | 2015-04-22 |
Family
ID=47637355
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201210418966.8A Expired - Fee Related CN102922354B (en) | 2012-10-26 | 2012-10-26 | Friction wheel traction transmission cycloidal processing device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN102922354B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104759924A (en) * | 2015-04-13 | 2015-07-08 | 大连交通大学 | Friction wheel traction transmission planetary machining knife handle |
CN110315113B (en) * | 2019-06-19 | 2020-06-05 | 北京理工大学 | Design and assembly method of a single-axis input planetary compound milling tool |
CN114012154A (en) * | 2021-11-18 | 2022-02-08 | 大连交通大学 | A milling torque measuring sensor |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2218181A (en) * | 1988-05-04 | 1989-11-08 | Reliance Gear Co | Gearing device |
CN2622482Y (en) * | 2003-04-29 | 2004-06-30 | 阎国俊 | Planetary gear speed reducer for sampling device |
US20060205554A1 (en) * | 2003-08-12 | 2006-09-14 | Osamu Nohara | Speed reducer for use in yaw drive apparatus for wind power generation apparatus, and yaw drive method and apparatus for wind power generation apparatus using the speed reducer |
CN201003571Y (en) * | 2007-01-19 | 2008-01-09 | 大连交通大学 | Three-gear plate internal meshing planetary gear transmission with small tooth difference |
CN101389884A (en) * | 2006-03-21 | 2009-03-18 | Zf腓德烈斯哈芬股份公司 | Two-stage machine tool gearing, in particular spindle gearing |
CN201288790Y (en) * | 2008-10-13 | 2009-08-12 | 大连交通大学 | Pin gear output needle pendulum planetary transmission decelerator |
CN202158144U (en) * | 2011-07-20 | 2012-03-07 | 大连交通大学 | Multistage pinwheel output pin swing planetary transmission speed reducer |
CN202861869U (en) * | 2012-10-26 | 2013-04-10 | 大连交通大学 | Friction wheel traction transmission cycloid machining device |
-
2012
- 2012-10-26 CN CN201210418966.8A patent/CN102922354B/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2218181A (en) * | 1988-05-04 | 1989-11-08 | Reliance Gear Co | Gearing device |
CN2622482Y (en) * | 2003-04-29 | 2004-06-30 | 阎国俊 | Planetary gear speed reducer for sampling device |
US20060205554A1 (en) * | 2003-08-12 | 2006-09-14 | Osamu Nohara | Speed reducer for use in yaw drive apparatus for wind power generation apparatus, and yaw drive method and apparatus for wind power generation apparatus using the speed reducer |
CN101389884A (en) * | 2006-03-21 | 2009-03-18 | Zf腓德烈斯哈芬股份公司 | Two-stage machine tool gearing, in particular spindle gearing |
CN201003571Y (en) * | 2007-01-19 | 2008-01-09 | 大连交通大学 | Three-gear plate internal meshing planetary gear transmission with small tooth difference |
CN201288790Y (en) * | 2008-10-13 | 2009-08-12 | 大连交通大学 | Pin gear output needle pendulum planetary transmission decelerator |
CN202158144U (en) * | 2011-07-20 | 2012-03-07 | 大连交通大学 | Multistage pinwheel output pin swing planetary transmission speed reducer |
CN202861869U (en) * | 2012-10-26 | 2013-04-10 | 大连交通大学 | Friction wheel traction transmission cycloid machining device |
Non-Patent Citations (2)
Title |
---|
孙英时等: "两齿差摆线针轮减速机针齿销弯曲强度和刚度的计算", 《机械设计》, vol. 27, no. 4, 30 April 2010 (2010-04-30) * |
杜秀菊等: "摆线行星针轮减速器的研究", 《机械传动》, vol. 25, no. 1, 31 January 2001 (2001-01-31) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104759924A (en) * | 2015-04-13 | 2015-07-08 | 大连交通大学 | Friction wheel traction transmission planetary machining knife handle |
CN110315113B (en) * | 2019-06-19 | 2020-06-05 | 北京理工大学 | Design and assembly method of a single-axis input planetary compound milling tool |
CN114012154A (en) * | 2021-11-18 | 2022-02-08 | 大连交通大学 | A milling torque measuring sensor |
Also Published As
Publication number | Publication date |
---|---|
CN102922354B (en) | 2015-04-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN100528475C (en) | Bevel-gear right-angle milling head | |
CN108036027A (en) | Robot RV-C type speed reducers | |
CN104565333A (en) | Method for automatically eliminating limited angle gear backlash | |
CN103481069A (en) | Rotary workbench and upright type turning and milling composite machine tool | |
CN103990819A (en) | Spindle device of high-speed double-end collet chuck numerically-controlled machine tool | |
CN102922354B (en) | Friction wheel traction transmission cycloidal processing device | |
CN114871822A (en) | Centrifugal force-free cutting device | |
CN102728859B (en) | Axial locking mechanism of machine tool spindle | |
CN110594379B (en) | A nut-driven hydrostatic screw screw transmission pair and a machine tool | |
CN202861869U (en) | Friction wheel traction transmission cycloid machining device | |
CN104759924B (en) | Friction wheel traction transmission planetary machining knife handle | |
CN101979202B (en) | Face gear numerical control machining device and machining method | |
CN202271170U (en) | Modularized B shaft turning and milling composite functional unit | |
CN103846684A (en) | Processor additional head capable of automatically changing angles of B-axis headstock | |
CN103586759B (en) | A kind of superhigh speed grinding equipment | |
CN102717100B (en) | Gear milling spindle box directly driven by torque motor | |
CN204052994U (en) | A kind of deep hole drilling and boring machine with planet-cycloid reducer | |
CN110480062B (en) | A cam mechanism type axial vibration drilling device | |
CN108746797A (en) | A kind of Compound Machining tool milling-milling power head | |
CN106636587B (en) | More shock surface nanosizings and gradient-structure processing unit (plant) | |
CN204339412U (en) | A kind of ball-screw end spring bearing configuration structure of high speed feed axle | |
CN204524978U (en) | A kind of precise heavy-load Intelligent adjustment huge revolving table | |
CN113400114A (en) | Grinding device for high-precision shaft machining and grinding process thereof | |
CN203917948U (en) | With the hydrostatic spindle of speed-changing driving device | |
CN207642759U (en) | A power head with two-way movement |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20151026 |
|
EXPY | Termination of patent right or utility model |